{"id":64327,"date":"2025-08-01T16:59:29","date_gmt":"2025-08-01T11:29:29","guid":{"rendered":"https:\/\/johnsonfrancis.org\/professional\/?p=64327"},"modified":"2025-08-01T16:59:34","modified_gmt":"2025-08-01T11:29:34","slug":"what-are-the-causes-of-tall-r-waves-in-v1","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/","title":{"rendered":"What are the causes of tall R waves in V1?"},"content":{"rendered":"<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/j40eRPytW2E?si=3xWRkSz24T2uOdz2\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\n<p class=\"wp-block-paragraph\">In normal individuals there is only a small R wave (r) in V1 which is followed by a deep S wave, indicating left ventricular dominance. Tall R in V1 usually make us suspect right ventricular hypertrophy. But tall R in V1 can occur without heart disease due to misplaced chest leads, rightward shift of the heart (dextroversion) due to acquired or congenital causes and occasionally as a normal variant.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The conventional &#8216;true posterior&#8217; wall myocardial infarction (lateral wall infarction) can cause tall R in V1, which is equivalent to deep Q waves in posterior leads, seen as a mirror image in anterior leads. Tall R waves in V1 may also occur in Duchenne muscular dystrophy and hypertrophic cardiomyopathy. Right bundle branch block and accessory pathways causing preexcitation of posterior or lateral walls can also manifest tall R waves in V1. In WPW syndrome, it is the anteriorly directed delta wave which appears as tall R wave.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In normal individuals there is only a small R wave (r) in V1 which is followed by a deep S wave, indicating left ventricular dominance. Tall R in V1 usually make us suspect right ventricular hypertrophy. But tall R in V1 can occur without heart disease due to misplaced chest leads, rightward shift of the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":64332,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","footnotes":""},"categories":[9],"tags":[],"class_list":["post-64327","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What are the causes of tall R waves in V1? - All About Cardiovascular System and Disorders<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What are the causes of tall R waves in V1? - All About Cardiovascular System and Disorders\" \/>\n<meta property=\"og:description\" content=\"In normal individuals there is only a small R wave (r) in V1 which is followed by a deep S wave, indicating left ventricular dominance. Tall R in V1 usually make us suspect right ventricular hypertrophy. But tall R in V1 can occur without heart disease due to misplaced chest leads, rightward shift of the [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/\" \/>\n<meta property=\"og:site_name\" content=\"All About Cardiovascular System and Disorders\" \/>\n<meta property=\"article:published_time\" content=\"2025-08-01T11:29:29+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-08-01T11:29:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2025\/08\/What-are-the-causes-of-tall-R-waves-in-V1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1206\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"headline\":\"What are the causes of tall R waves in V1?\",\"datePublished\":\"2025-08-01T11:29:29+00:00\",\"dateModified\":\"2025-08-01T11:29:34+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/\"},\"wordCount\":166,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/What-are-the-causes-of-tall-R-waves-in-V1.jpg\",\"articleSection\":[\"General Cardiology\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/\",\"name\":\"What are the causes of tall R waves in V1? - All About Cardiovascular System and Disorders\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/What-are-the-causes-of-tall-R-waves-in-V1.jpg\",\"datePublished\":\"2025-08-01T11:29:29+00:00\",\"dateModified\":\"2025-08-01T11:29:34+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/#primaryimage\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/What-are-the-causes-of-tall-R-waves-in-V1.jpg\",\"contentUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/wp-content\\\/uploads\\\/2025\\\/08\\\/What-are-the-causes-of-tall-R-waves-in-V1.jpg\",\"width\":1206,\"height\":675},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/what-are-the-causes-of-tall-r-waves-in-v1\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"What are the causes of tall R waves in V1?\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#website\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/\",\"name\":\"All About Cardiovascular System and Disorders\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":[\"Person\",\"Organization\"],\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/#\\\/schema\\\/person\\\/5441d907049b914770f4bd98fb57feec\",\"name\":\"Johnson Francis\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\",\"caption\":\"Johnson Francis\"},\"logo\":{\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g\"},\"description\":\"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/professional\\\/author\\\/jf\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"What are the causes of tall R waves in V1? - All About Cardiovascular System and Disorders","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/","og_locale":"en_US","og_type":"article","og_title":"What are the causes of tall R waves in V1? - All About Cardiovascular System and Disorders","og_description":"In normal individuals there is only a small R wave (r) in V1 which is followed by a deep S wave, indicating left ventricular dominance. Tall R in V1 usually make us suspect right ventricular hypertrophy. But tall R in V1 can occur without heart disease due to misplaced chest leads, rightward shift of the [&hellip;]","og_url":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/","og_site_name":"All About Cardiovascular System and Disorders","article_published_time":"2025-08-01T11:29:29+00:00","article_modified_time":"2025-08-01T11:29:34+00:00","og_image":[{"width":1206,"height":675,"url":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2025\/08\/What-are-the-causes-of-tall-R-waves-in-V1.jpg","type":"image\/jpeg"}],"author":"Johnson Francis","twitter_card":"summary_large_image","twitter_misc":{"Written by":"Johnson Francis","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/#article","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/"},"author":{"name":"Johnson Francis","@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"headline":"What are the causes of tall R waves in V1?","datePublished":"2025-08-01T11:29:29+00:00","dateModified":"2025-08-01T11:29:34+00:00","mainEntityOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/"},"wordCount":166,"publisher":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/#primaryimage"},"thumbnailUrl":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2025\/08\/What-are-the-causes-of-tall-R-waves-in-V1.jpg","articleSection":["General Cardiology"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/","url":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/","name":"What are the causes of tall R waves in V1? - All About Cardiovascular System and Disorders","isPartOf":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#website"},"primaryImageOfPage":{"@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/#primaryimage"},"image":{"@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/#primaryimage"},"thumbnailUrl":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2025\/08\/What-are-the-causes-of-tall-R-waves-in-V1.jpg","datePublished":"2025-08-01T11:29:29+00:00","dateModified":"2025-08-01T11:29:34+00:00","breadcrumb":{"@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/#primaryimage","url":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2025\/08\/What-are-the-causes-of-tall-R-waves-in-V1.jpg","contentUrl":"https:\/\/johnsonfrancis.org\/professional\/wp-content\/uploads\/2025\/08\/What-are-the-causes-of-tall-R-waves-in-V1.jpg","width":1206,"height":675},{"@type":"BreadcrumbList","@id":"https:\/\/johnsonfrancis.org\/professional\/what-are-the-causes-of-tall-r-waves-in-v1\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/johnsonfrancis.org\/professional\/"},{"@type":"ListItem","position":2,"name":"What are the causes of tall R waves in V1?"}]},{"@type":"WebSite","@id":"https:\/\/johnsonfrancis.org\/professional\/#website","url":"https:\/\/johnsonfrancis.org\/professional\/","name":"All About Cardiovascular System and Disorders","description":"","publisher":{"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/johnsonfrancis.org\/professional\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":["Person","Organization"],"@id":"https:\/\/johnsonfrancis.org\/professional\/#\/schema\/person\/5441d907049b914770f4bd98fb57feec","name":"Johnson Francis","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g","caption":"Johnson Francis"},"logo":{"@id":"https:\/\/secure.gravatar.com\/avatar\/80861b82c3f559be9e413245c5643b6c483c93495507facfe32cf96ccd8bcffd?s=96&d=mm&r=g"},"description":"Former Professor of Cardiology, Calicut Govt. Medical Kozhikode, Kerala, India. Editor-in-Chief, BMH Medical Journal","url":"https:\/\/johnsonfrancis.org\/professional\/author\/jf\/"}]}},"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/64327","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/comments?post=64327"}],"version-history":[{"count":5,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/64327\/revisions"}],"predecessor-version":[{"id":64334,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/posts\/64327\/revisions\/64334"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/media\/64332"}],"wp:attachment":[{"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/media?parent=64327"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/categories?post=64327"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/johnsonfrancis.org\/professional\/wp-json\/wp\/v2\/tags?post=64327"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}